(a) Spermatogenesis or the formation of sperms in human beings occurs by the process of meiosis. It results in the formation of four equal-sized daughter cells.
(b) Oogenesis or the formation of ovum in human beings occurs by the process of meiosis. It results in the formation of four daughter cells which are unequal in size i.e. are big mature ovum and 3 smell polar bodies.
Define a taxon. Give some examples of taxa at different hierarchical levels.
What are the steps involved in formation of a root nodule?
New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
Cell is the basic unit of life. Discuss in brief.
What are the functions of liver?
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
There are only two polar body formed during a oogenesis process.and they degenerate due to insufficient of cytoplasm.